Disconnect

Hello
Several times I got disconnect. From the beginning of a lag. Then I got discconect. Page https://eu.4game.com/lineage2classic/play/ and https://4gameforum.com/ is off. Just do not load. I tried other sites and you're gone without a problem. My internet was OK. After a while (1-2min) everything was ok. My friend has the same problem.
From the start, the server's happened to me 4 times. Sorry for my English